使用java的GUI设计一个简单的登陆界面（1）

• 实现效果如下

import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.FlowLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
import javax.swing.JTextField;


public class Login{
    private JFrame frame = new JFrame("登录");
    private Container c = frame.getContentPane();
    private JTextField username = new JTextField();
    private JPasswordField password = new JPasswordField();
    private JButton ok = new JButton("确定");
    private JButton cancel = new JButton("取消");
    
    public Login(){
        frame.setSize(300,200);
        c.setLayout(new BorderLayout());
        initFrame();
        frame.setVisible(true);
    }

    private void initFrame(){
        //顶部
        JPanel titlePanel = new JPanel();
        titlePanel.setLayout(new FlowLayout());
        titlePanel.add(new JLabel("系统管理员登录"));
        c.add(titlePanel,"North");

        //中部表单
        JPanel fieldPanel = new JPanel();
        fieldPanel.setLayout(null);
        JLabel a1 = new JLabel("用户名:");
        a1.setBounds(50,20,50,20);
        JLabel a2 = new JLabel("密  码:");
        a2.setBounds(50,60,50,20);
        fieldPanel.add(a1);
        fieldPanel.add(a2);
        username.setBounds(110,20,120,20);
        password.setBounds(110,60,120,20);
        fieldPanel.add(username);
        fieldPanel.add(password);
        c.add(fieldPanel,"Center");

        //底部按钮
        JPanel buttonPanel = new JPanel();
        buttonPanel.setLayout(new FlowLayout());
        buttonPanel.add(ok);
        buttonPanel.add(cancel);
        c.add(buttonPanel,"South");
    }

    public static void main(String[] args){
        new Login();
    }
}

 另外附带一个网友写的比较好的学习笔记博客，附上地址：

http://blog.sina.com.cn/s/blog_614f347b0101egah.html

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